External joint for escape-pipes



Patented 001;. 17,1893.

JW @M 'is made thoroughly Water tight.

UNITED STATES PATENT Futon.

FREDERICK R. NIES AND FRANCIS J. LINNEHAN, OF SWAMPSCOTT, MASSACHUSETTS.

EXTERNAL JOINT FOR ESCAPE-PIPES, 86C.

SPECIFICATION forming part of Letters Patent No. 506,930, dated October1'7, 1893. Application filed July 3,1 893. Serial IIo. 479,458. ((Nomodel.)

T0 @ZZ whom t may concern:

Be it known that We, FREDERICK R. NIES and FRANCIS J. LINNEHAN, both ofSwampscott, county of Essex, State of Massachusetts, have invented anImprovement in External Joints for Escape-Pipes, dac., of which thefollowing description, in connection with the accompanying drawings, isa specification, like letters on the drawings representing like parts. a

This invention has for its object the production of a simple andconvenient external joint for escape pipes, dac., whereby the joint Suchjoints are now made, so far as known to us, by forming acylinder oflead, sheet brass, dac., to the lower end of which a flange is braze'dor soldered, the cylinder surrounding the pipe projecting from the roofand having its lower end cut at an angle to correspond with the pitch ofthe roof, the ange being secured thereto in any suitable manner, orsheetlead is hammered into place around the escape pipe, and the betterthe job the more nearly will the joint become water tight. These andother devices and methods are cumbersome, expensive, and notsatisfactory.

In accordance with our invention we surround the pipe with preferably acast lead hub provided with an integral supporting iiange set at theproper angle to correspond with the pitch of the roof, and with said hubwe combine a flanged sleeve or collar to support the packing above theroof, substantially as will be described.

Figure 1 in vertical section represents a portion of a roof with ourinvention applied thereto, the escape pipe being shown in dotted lines.Fig. 2 isasection al detail of the flanged sleeve or collar, and Figs. 3and 4 are sectional views of modifications to be referred to.

In carrying out our invention we preferably cast a cylindrical hub aupon a base or flange a', of lead or other suitable metal, lead beingpreferred because of its cheapness and facility to be worked, the basebeing at an angle with relation to the hub a determined by the pitch ofthe roof to which it is to be applied. A sleeve or collar b, shownseparately in Fig. 2, having an inturned iiange b',

and preferably of cast iron, is inserted in the upper end of the hub,reduced in thickness thereat to leave a shoulder a2 upon which thesleeve rests, and the upper end of the hub is bent down over the top ofthe sleeve, as at a3, eectually preventing the entrance of any moisturebetween the hub and sleeve. It' desired the sleeve may be placed in themold and the cylindrical hub a cast about it. The projecting end of thepipe P, see dotted lines, passes snugly through the annular flange h',which sustains the packing, not shown, after which molten lead is pouredinto the space between the pipe P and the hub, in well known manner. Thenecessity for a temporary stop or dam of putty or other material is thusobviated, for the opening of the joint is horizontal, and the moltenlead can be poured directly upon the packing sustained by the iange b',and the sleeve strengthens the hub at the point Where the joint is made.A perfectly tight joint is thus possible, for the hardened lead makes asolid water-tight entirely around the pipe and between it and thecylindrical hub a.

The shingles or slates soverlap thebase or Vliange a upon the upper sideof the joint,

and at the lower side the flange is bent as at ax to cover or lap overthe upper edges of the first tier of slates or shingles s', so thatwater or moisture cannot iind its way in between the flange and roof atthe base of the cylinder.

In Fig. 3 we have shown a modified form of ourinvention, in which thesleeve is extended below the iiange, as at bx, and has an outwardlyturned fiange b2 adapted to tit in a suitable recess a5 in the base a.The hub and flange in this instance of our invention may be either castaround the sleeve as a core, or the sleeve may be inserted therein fromthe bottom, the top of the hub being bent over as at a". As shown inthis modification the sleeve stiffens the hub and joint, and is veryuseful where the pipes are large.

Yet another modification is shown in Fig. 4, wherein the sleeve b,having the usual flange b', and an outwardly turned base b3, inclosesthe cylindrical hub a., the base b3 resting on the cast base a. The huba extends up to and is covered at the top by the flange b of the sleeve,the sleeve being substantially the same as that shown in Fig 3.

By referring to the various figures of the drawings it will beobservedthat in all cases the outer wall surrounding the joint is formed orstrengthened by the sleeve, the ductility of the hub and its base flangereadily adapting it to be tightly and easily secured to the roof orother portion of the building to which it is applied.

Our invention is not limited tothe exact construction and arrangementherein shown,

nor to any particular metal or metals, the4 vided with an inturned angeto` surround the pipe at the upper end of said hub and sustain thepacking and joint between the pipe and sleeve at such point above theroof, substantially as described. l

3. An external joint for escape pipes, &c.,

consisting of a cylindrical hub and base of,

malleable metal, combined .with a rigid con centric metallic sleevehaving an iuturned flange and an upwardly extended portion to surroundthe pipe, to form the bottom and outer wall for the joint, substantiallyas described.

4. An external joint for escape pipes, dac., consisting of a recessedcylindrical hub and au extended base, combined with a rigid metallicsleeve having an annular flange to surround the pipeand an outwardlyturned flange to enter the recessed hub, substantially as described.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

FREDERICK' R. NIES. FRANCIS J. LINNEHAN. Witnesses:

J AMES H. SIsK, RICHARD L. SIsK.

